Utility is a type of function that occurs in economics. When a consumer AU receives x units of a certain product, a certain amount of pleasure, or utility U, 200- is derived. The graph represents a typical utility function. (4, 162) 150- (3, 140) a) Find the average rate of change of U as x changes from 0 to 1; from 1 to 2; (2,110) from 2 to 3; from 3 to 4. Utility (pleasure units) 100- (1,70) b) Why do the average rates of change decrease as x increases? 50- 0- VX Number of units of product . . . a) The average rate of change of U as x changes from 0 to 1 is (Type an integer or a decimal.) le tat oc